Media circus is a colloquial metaphor, or idiom, describing a news event for which the level of media coverage—measured by such factors as the number of reporters at the scene and the amount of material broadcast or published—is perceived to be excessive or out of proportion to the event being covered. Coverage that is sensationalistic can add to the perception the event is the subject of a media circus. The term is meant to critique the coverage of the event by comparing it to the spectacle and pageantry of a circus. Usage of the term in this sense became common in the 1970s. It can also be called a media feeding frenzy or just media frenzy, especially when the media coverage itself is covered.

William Floyd Collins was an American cave explorer, principally in a region of Kentucky that houses hundreds of miles of interconnected caves, today a part of Mammoth Cave National Park, the longest known cave system in the world.